Patronus Charm
— "Expecto Patronum"
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Spells
Conjures a Patronus, a silvery phantom shape, usually that of an animal, which is the embodiment of the positive thoughts of the caster. A Patronus will drive away Dementors. A fully-shaped spirit animal is called a “Corporeal Patronus.” (OP8, OP16)… Read More

Four-Point Spell
— "Point Me"
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Spells
A simple spell, performed with the wand laying flat on the open palm of the caster. When the words are spoken, the wand rotates to point north. In effect, the wand becomes the arrow of a compass. Read More

Polyjuice Potion
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Potions
Effect: Transforms a person to look exactly like someone else. One dose lasts for one hour, but doses can be renewed, apparently indefinitely. Read More

possession
— "none given"
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Magical effects
Dark Magical effect of one person’s spirit inhabiting or taking over the body of another. The only examples of possession are the actions of Voldemort, the greatest Dark wizard of the age. Read More